<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片区域 -->
    <el-card>
      <!-- 输入框 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- tabel表格区域 -->
      <el-table :data="goodsList" border stripe>
        <el-table-column type="index"> </el-table-column>
        <el-table-column label="商品名称" prop="goods_name"> </el-table-column>
        <el-table-column label="商品价格（元）" prop="goods_price" width="95px">
        </el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px">
        </el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditList(scope.row.goods_id)"
            ></el-button>
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>

    <!-- 编辑的对话框 -->
    <el-dialog
      title="编辑商品信息"
      :visible.sync="editDialogVisible"
      width="50%"
    >
      <!-- from    start -->

      <el-form
        :model="editListForm"
        :rules="editListRules"
        ref="editListFormRef"
        label-width="100px"
      >
        <el-form-item label="商品名称" prop="goods_name">
          <el-input v-model="editListForm.goods_name"></el-input>
        </el-form-item>
        <el-form-item label="商品价格" prop="goods_price">
          <el-input v-model="editListForm.goods_price"></el-input>
        </el-form-item>
        <el-form-item label="商品重量" prop="goods_weight">
          <el-input v-model="editListForm.goods_weight"></el-input>
        </el-form-item>
      </el-form>
      <!-- from    end -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editList()">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: "",
        pagenum: 1,
        pagesize: 10
      },
      //   商品列表
      goodsList: [],
      // 总数据页数
      total: 0,
      // 编辑对话框的显示与隐藏
      editDialogVisible: false,
      // 编辑列表表单
      editListForm: [],
      // 编辑表单验证规则
      editListRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" }
        ],
        goods_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" }
        ],
        goods_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" }
        ]
      }
    };
  },
  created() {
    this.getGoodsList();
  },
  methods: {
    //  根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get("goods", {
        params: this.queryInfo
      });
      //   获取失败
      if (res.meta.status !== 200) {
        return this.$message.error("获取列表失败");
      }
      //   获取成功后的操作
      this.goodsList = res.data.goods;
      this.total = res.data.total;
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getGoodsList();
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getGoodsList();
    },
    async removeById(id) {
      const confirmResult = await this.$confirm(
        "此操作将永久删除该商品, 是否继续?",
        "提示",
        {
          confirmButtonText: "确定",
          cancelButtonText: "取消",
          type: "warning"
        }
      ).catch(err => err);

      if (confirmResult !== "confirm") {
        return this.$message.info("已经取消删除");
      }

      const { data: res } = await this.$http.delete(`goods/${id}`);
      if (res.meta.status !== 200) {
        return this.$message.error("删除失败");
      }
      this.$message.success("删除成功");
      this.getGoodsList();
    },
    // 点击按钮 添加商品
    goAddpage() {
      // 跳转到新的组件
      this.$router.push("/goods/add");
    },
    // 根据id查找商品
    async showEditList(id) {
      const { data: res } = await this.$http.get("goods/" + id);
      if (res.meta.status !== 200) {
        return this.$message.error("获取商品列表失败！");
      }
      this.editListForm = res.data;
      this.editDialogVisible = true;
    },
    // 编辑商品
    editList() {
      this.$refs.editListFormRef.validate(async valid => {
        if (!valid) return;
        const { data: res } = await this.$http.put(
          "goods/" + this.editListForm.goods_id,
          this.editListForm
        );
        if (res.meta.status !== 200) {
          return this.$message.error("更新商品分类失败！");
        }
        this.$message.success("更新商品分类成功！");
        this.getGoodsList();
        this.editDialogVisible = false;
      });
    }
  }
};
</script>

<style lang="less" scoped></style>
